Higher-order QCD corrections to H → b b¯ from rational approximants

Diogo Boito*, Cristiane Y. London, Pere Masjuan

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)


We use rational approximants to study missing higher orders in the massless scalar-current quark correlator. We predict the yet unknown six-loop coefficient of its imaginary part, related to Γ(H → bb¯), to be c5 = −6900 ± 1400. With this result, the perturbative series becomes almost insensitive to renormalization scale variations and the intrinsic QCD truncation uncertainty is tiny. This confirms the expectation that higher-order loop computations for this quantity will not be required in the foreseeable future, as the uncertainty in Γ(H → bb¯) will remain largely dominated by the Standard Model parameters.

Original languageEnglish
Article number54
Number of pages23
JournalJournal of High Energy Physics
Issue number1
Publication statusPublished - Jan 2022


  • NLO Computations
  • QCD Phenomenology


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